Recent content by Broadlands

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    Ask Me Anything AMA with Dr Joe - Feb. 7th

    Maybe because there has been no further evidence of any microbial life on Mars. What will be required are some preserved carbonaceous "fossils", not just metabolic products that could be abiotic. Even they will require some evidence that they came from a microbe. Fossil organic matter a billion...
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    Ask Me Anything AMA with Dr Joe - Feb. 7th

    Joe... Why hasn't Perserverance Rover on Mars analyzed any of the sediments in the lake bed where it landed? Sending postcard landscapes home is fine but doesn't help the search for life. There should be evaporite mineral there after the water dried up.
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    NASA's Perseverance is exploring Mars! Come watch updates with us!

    "We got our best-ever composition analysis of Martian dust before it even looked at rock,” Has this composition been reported or published? Is it a chemical or mineralogical composition? The latter is the most important.
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    Question Can one infinity be larger than another infinity?

    Exactly! Discussing infinity is fodder for those academics drinking lattes in the faculty lounges. But it is little else of practical significance to the eight billion people trying to make a living and just get along. Maybe politicians who think that there is an infinite amount of money they...
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    NASA's Perseverance is exploring Mars! Come watch updates with us!

    All of this is exciting and new. Amazing technological feat. But when will the research begin on the sediments to examine them for evidence of life on Mars billions of years ago? That was the basic purpose of these rovers.
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    NASA's Perseverance is exploring Mars! Come watch updates with us!

    After it lands, how long will it take to start the scientific experiments and send back the results?
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    Announcement Astrophysicist Joe Pesce is back - this time, in video!

    There have been recent media reports, presumably of aliens moving through space at high velocities. What sort of materials, cellular tissues, could these space visitors be made of? Do they have bones and skin? Or are they inorganic robots?
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    30 million years ago

    Helio says: "Although evolution is not "just a theory" it's still a theory and it is not a "fact". What I mean by that is that I regard facts as specific objective evidence." As described earlier, the fossil record exposed by erosion in the flat-lying sediments on both sides, and down to the...
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    30 million years ago

    Critics of evolution relish in emphasizing the complexity and unsolved problems surrounding its mechanisms. They point to errors made by earlier researchers, and enthusiastically conclude from all of these difficulties that evolution is “only a theory.” They routinely misinterpret or ignore the...